@guest
I found that Synaptics let set the pressure of both buttons as the middle button, you just have [details=to do what it’s described in here only if you know what you’re doing, I’ll not be responsible for any system failure]to add a new DWORD key into HKLM\SOFTWARE\Synaptics\SynTP\Defaults, name it HasBothButtonFeature and set its value to 1; logoff and logon may be required to see this actually working[/details]